CN106878854B - Earphone acoustic cavity structure - Google Patents
Earphone acoustic cavity structure Download PDFInfo
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- CN106878854B CN106878854B CN201710239383.1A CN201710239383A CN106878854B CN 106878854 B CN106878854 B CN 106878854B CN 201710239383 A CN201710239383 A CN 201710239383A CN 106878854 B CN106878854 B CN 106878854B
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- cavity
- earphone
- loudspeaker
- tuning
- vent hole
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1091—Details not provided for in groups H04R1/1008 - H04R1/1083
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
- H04R2201/10—Details of earpieces, attachments therefor, earphones or monophonic headphones covered by H04R1/10 but not provided for in any of its subgroups
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Headphones And Earphones (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The invention provides an earphone acoustic cavity structure, which comprises an earphone cavity, wherein a loudspeaker is arranged in the earphone cavity, the earphone cavity further comprises a middle tuning cavity, the middle tuning cavity is arranged in the earphone cavity and surrounds the side periphery of the loudspeaker, the middle tuning cavity further comprises a vent hole, and the sound frequency band is adjusted by adjusting the ventilation quantity of the vent hole. Through setting up middle part tuning chamber, form a little volume cavity in the periphery of loudspeaker to through the air damping of adjustment air vent, very effectual adjustment to the different frequency channel sound is strengthened or is weakened, this kind of earphone can be extremely convenient the adjustment frequency channel of 20-4000Hz, and it is important in addition for earphone has reduced and has set up this partial electronic circuit of low frequency filter and equalizer, has brought more simplified adjustment mode for earphone sound design. The invention solves the problem that the matching adjustment of electronic circuits or speakers and other modes can not adjust a plurality of frequency bands, and can allow a designer to have wider material and size choices for each part.
Description
Technical Field
The invention relates to the field of earphone structure design, in particular to an earphone acoustic cavity structure.
Background
Traditional earphone cavity, unable different frequency channel sensitivity of targeted adjustment need carry out the precision with loudspeaker moreover. The earphone with poor adjustment sensitivity and high adjustment difficulty can be adjusted only through other accessories such as a loudspeaker, an electronic circuit and the like, so that the earphone has difficult overall adaptability; and the selection range of spare and accessory parts in the design is narrow, the cost investment is high, and the development is not facilitated.
Disclosure of Invention
The invention aims to solve the problems and provide an earphone acoustic cavity structure capable of adjusting sounds in different frequency bands without an electronic circuit.
In order to solve the problems, the invention provides an acoustic cavity structure of an earphone, which comprises an earphone cavity, wherein a loudspeaker is arranged in the earphone cavity, the acoustic cavity structure also comprises a middle tuning cavity, the middle tuning cavity is arranged in the earphone cavity and surrounds the side periphery of the loudspeaker, the middle tuning cavity also comprises a vent hole, and the sound frequency band is adjusted by adjusting the ventilation quantity of the vent hole.
Through setting up middle part tuning chamber, form a little volume cavity in the periphery of loudspeaker to through the air damping of adjustment air vent, thereby can carry out the adjustment that strengthens or decay to the different frequency channels of earphone sound.
Preferably, the earphone comprises a tray and a rear shell, wherein the tray and the rear shell are connected to form an earphone cavity.
Preferably, the volume of the cavity of the middle tuning cavity is 1.5-3.5 times of the volume of the loudspeaker. The reasonable volume of the middle tuning cavity enables the ventilation quantity of the ventilation hole to be controllable. Effectively adjusts the earphone frequency response curve.
Further preferably, the volume of the cavity of the middle tuning cavity is 2-3 times of the volume of the loudspeaker. As the volume of the middle tuning cavity is optimized, the sensitivity of frequency band adjustment is further enhanced.
Preferably, the middle tuning cavity is provided with a loudspeaker positioning hole. Through loudspeaker locating hole, can make middle part tuning chamber and loudspeaker location connection to expose loudspeaker back from the position of locating hole, thereby form ventilative passageway with the air vent.
Preferably, the vent holes comprise a first vent hole arranged on the middle tuning cavity and a second vent hole arranged on the pad disc. The side surface of the middle tuning cavity and the pad disc are provided with vent holes, so that the sound loop is easier to adjust.
Further preferably, tuning materials are arranged on the first vent hole and the second vent hole. The air damping of the vent holes is changed through the tuning material, so that a plurality of frequency bands are effectively adjusted.
Further preferably, the first vent hole is provided at a side of the middle tuning chamber in contact with the rear housing. By varying the density of the tuning material, the ventilation is reduced where the volume of the lumen is reduced, and equivalent to varying the volume of the lumen where the ventilation is increased where the volume of the lumen is increased.
Further preferably, the second ventilation holes are arranged on the saucers at two sides of the corresponding loudspeaker. By the change in the density of the tuning material, the volume change equivalent to the front cavity (the space where the ear contacts the earpiece) where the ventilation decreases, the front cavity volume decreases, and where the ventilation increases, the front cavity volume increases.
Preferably, a washer is arranged at the joint of the middle tuning cavity and the pad disc and is locked and connected through a screw, and the rear shell is clamped with the pad disc and is locked through the screw. The middle tuning cavity is tightly matched with the saucer and the rear shell, and the reverse sound wave emitted by the back surface of the loudspeaker in the earshell is isolated by the middle tuning cavity. A purer audible sensation can be obtained.
Preferably, a pressing part for reinforcing the combination of the middle tuning cavity and the pad disc is further arranged in the rear shell. The tightness of the connection of the middle tuning cavity and the saucer is further enhanced, so that the sound is purer.
Compared with the prior art, the invention has the following advantages:
the invention provides an acoustic cavity structure of an earphone, which is characterized in that a small-volume cavity is formed at the periphery of a loudspeaker by arranging a middle tuning cavity, and sound in different frequency bands can be very effectively regulated in a reinforcing or weakening way by regulating air damping of a vent hole, so that the earphone can be very conveniently regulated in the frequency band of 20-4000Hz, and importantly, the earphone is reduced in electronic circuits of a low-frequency filter and an equalizer, thereby bringing a simpler regulation mode for the sound design of the earphone. The invention solves the problem that the matching adjustment of electronic circuits or speakers and other modes can not adjust a plurality of frequency bands, and can allow a designer to have wider material and size choices for each part.
Drawings
Fig. 1 is an exploded view of an acoustic cavity structure of an earphone in accordance with an embodiment of the present invention.
Fig. 2 is a schematic diagram of the corresponding structures of the rear shell, the middle tuning cavity and the saucer of the acoustic cavity structure of the earphone according to the embodiment of the invention.
Fig. 3 is a cross-sectional view of an acoustic cavity structure of an earphone in accordance with an embodiment of the present invention.
Fig. 4 is a perspective view of the internal structure of the central tuning cavity of the acoustic cavity structure of the earphone according to an embodiment of the present invention.
Fig. 5 is a perspective view of a back shell structure of an acoustic cavity structure of an earphone in accordance with an embodiment of the present invention.
Fig. 6 is a perspective view of the internal structure of a saucer of an acoustic cavity structure of an earphone according to an embodiment of the present invention.
Fig. 7 is a schematic diagram of a front structure of a saucer of an acoustic cavity structure of an earphone according to an embodiment of the present invention.
Fig. 8 is a schematic diagram showing the influence of the ventilation amount of the first vent hole of the acoustic cavity structure of the earphone on the frequency response curve according to the embodiment of the present invention.
Fig. 9 is a schematic diagram showing the influence of the ventilation amount of the second ventilation hole of the acoustic cavity structure of the earphone on the frequency response curve according to the embodiment of the present invention.
Wherein, 1 is the saucer, 11 is the second vent, 12 is the loudspeaker hole, 2 is loudspeaker, 3 is the backshell, 31 is the clamp, 32 is the third vent, 4 is middle part tuning chamber, 41 is loudspeaker locating hole, 42 is first air vent, 43 is loudspeaker line hole, 51 is first tuning material, 52 is second tuning material.
Detailed Description
The following examples are further illustrative and supplementary of the present invention and are not intended to limit the invention in any way.
The acoustic cavity structure of the earphone disclosed by the invention is suitable for various earphone types, such as in-ear type, ear-hanging type, head-wearing type and the like, and the embodiment is a specific implementation mode of the head-wearing earphone.
As shown in fig. 1-3, an acoustic cavity structure of an earphone comprises a back shell and a saucer which are fixedly connected, wherein the back shell and the saucer are clamped and fixed through a buckle structure and are locked and fixed through screws, a loudspeaker is arranged in the back shell and the saucer, the surface of the loudspeaker is exposed out of the saucer, the periphery of the side surface is surrounded by a middle tuning cavity, and the back surface of the loudspeaker is exposed out of the middle tuning cavity towards the inner cavity of the back shell. The middle tuning cavity surrounds the periphery of the side face of the loudspeaker and is fixedly connected with the pad disc in a tight fit mode, a gasket is arranged at the joint of the middle tuning cavity and the pad disc, and the middle tuning cavity is fastened with the pad disc through a buckle and then fixed through a screw. The cavity volume in middle part tuning chamber is 2.3 times of loudspeaker volume, provide a less volumetric middle part tuning district for loudspeaker, and through setting up first air vent on middle part tuning chamber, set up the second air vent on the saucer, set up first tuning paper on the first air vent, set up the second tuning paper on the second air vent, through the ventilation volume that changes first air vent and second air vent, thereby reach the effect of adjusting a plurality of frequency ranges respectively, the mode of adjusting ventilation volume can adopt the tuning paper of covering different densities or the preparation net class material of different mesh numbers on first air vent and second air vent.
Wherein, as shown in fig. 5, the backshell is the lid form, surrounds middle part tuning chamber and loudspeaker, and the joint is fixed on the saucer, and the backshell is inside to be equipped with the portion that compresses tightly, compresses tightly the portion when the equipment, compresses tightly middle part tuning chamber to the saucer direction, improves overall structure's firmness and the leakproofness that middle part tuning chamber and saucer are connected. The position of the rear shell corresponding to the first vent hole is provided with a third vent hole, and the positions of the first vent hole and the third vent hole are one side of the middle tuning cavity, which is contacted with the rear shell. The back shell is also provided with an earphone bracket connection structure, and a screw hole and a buckle position are arranged in the back shell.
As shown in FIG. 4, the middle tuning cavity is provided with a horn positioning hole for positioning the horn and exposing the back of the horn, the side edge of the horn positioning hole is also provided with a horn wire hole, one side of the middle tuning cavity is contacted with the back shell, the other side is not contacted with the back shell, a first vent hole is arranged on the side contacted with the back shell, a first tuning material is arranged on the first vent hole, the ventilation volume in the cavity of the middle tuning cavity is controlled, as shown in FIG. 8, the dotted line is a frequency response curve when the ventilation volume of the first vent hole is adjusted to be minimum, and the solid line is a frequency response curve when the ventilation volume of the first vent hole is adjusted to be maximum, so that the ventilation volume of the first vent hole can be adjusted to be about 1-30 dB in 20-400 Hz frequency band, about 1-7 dB in 800-2000 Hz frequency band and about 1-9 dB in 2000-4000Hz frequency band. As shown in fig. 6 and 7, the second vent hole is formed in the saucer, and as shown in fig. 9, the dotted line is a frequency response curve when the ventilation amount of the second vent hole is adjusted to be minimum, and the solid line is a frequency response curve when the ventilation amount of the second vent hole is adjusted to be maximum, so that the ventilation amount of the second vent hole can be adjusted to be about 1 to 6dB in a 20 to 350Hz frequency band and about 1 to 2dB in a 400 to 2000Hz frequency band by changing the second tuning material.
The acoustic cavity structure of the earphone disclosed by the application enables the earphone to conveniently adjust the frequency band of 20-4000Hz, and electronic circuits such as a low-frequency filter and an equalizer are not needed. The above structure brings a simplified adjusting mode for the earphone sound design. This approach may allow the designer to have a wider choice of materials and dimensions for each part, especially if otherwise not adjustable.
The foregoing is a description of specific embodiments of the invention, which are described in greater detail and are not to be construed as limiting the scope of the invention. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the spirit of the invention, and that these obvious alternatives fall within the scope of the invention.
Claims (2)
1. The utility model provides an earphone acoustic cavity structure, includes the earphone cavity, is equipped with loudspeaker (2), its characterized in that in the earphone cavity: the earphone comprises a loudspeaker body and is characterized by further comprising a middle tuning cavity (4), wherein the middle tuning cavity (4) is arranged in the earphone cavity and surrounds the side periphery of the loudspeaker (2), the middle tuning cavity (4) further comprises a vent hole, and the sound frequency band is adjusted by adjusting the ventilation quantity of the vent hole;
the earphone comprises a shell, a back shell (3) and a cushion disc (1), wherein the cushion disc (1) is connected with the back shell (3) to form an earphone cavity;
the volume of the cavity of the middle tuning cavity (4) is 1.5-3.5 times of the volume of the loudspeaker;
the vent holes comprise a first vent hole (42) arranged on the middle tuning cavity (4) and a second vent hole (11) arranged on the saucer (1);
tuning materials are arranged on the first ventilation holes (42) and the second ventilation holes (11);
the first vent hole (42) is arranged at one side of the middle tuning cavity (4) contacted with the rear shell (3);
the second ventilation holes (11) are arranged on the saucers (1) corresponding to the two sides of the loudspeaker (2);
a horn positioning hole (41) is formed in the middle tuning cavity (4);
the connection part of the middle tuning cavity (4) and the saucer (1) is provided with a gasket (12) and is locked and connected through a screw, the rear shell (3) is clamped with the saucer (1) and is locked through the screw, and the rear shell (3) is internally provided with a compressing part (31) for reinforcing the combination of the middle tuning cavity (4) and the saucer (1).
2. The earphone-acoustic cavity structure of claim 1, wherein: the volume of the cavity of the middle tuning cavity (4) is 2-3 times of the volume of the loudspeaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710239383.1A CN106878854B (en) | 2017-04-13 | 2017-04-13 | Earphone acoustic cavity structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710239383.1A CN106878854B (en) | 2017-04-13 | 2017-04-13 | Earphone acoustic cavity structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106878854A CN106878854A (en) | 2017-06-20 |
| CN106878854B true CN106878854B (en) | 2023-06-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710239383.1A Active CN106878854B (en) | 2017-04-13 | 2017-04-13 | Earphone acoustic cavity structure |
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| CN (1) | CN106878854B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107249156A (en) * | 2017-07-28 | 2017-10-13 | 深圳精拓创新科技有限公司 | The method of earphone and regulation earpiece audio characteristic |
| CN207427396U (en) * | 2017-09-04 | 2018-05-29 | 深圳市魅动智能股份有限公司 | Cavity configuration after a kind of earphone |
| CN109640211B (en) * | 2019-02-19 | 2024-03-12 | 深圳市澜科创科技有限公司 | Noise reduction earphone |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103686568A (en) * | 2013-12-23 | 2014-03-26 | 山东共达电声股份有限公司 | Directional MEMS (Micro Electro Mechanical Systems) microphone and sound receiving device |
| CN104581483A (en) * | 2014-12-24 | 2015-04-29 | 青岛歌尔声学科技有限公司 | Open type earphone |
| CN204316705U (en) * | 2014-12-01 | 2015-05-06 | 加一联创电子科技有限公司 | Earphone |
| CN105430550A (en) * | 2015-12-29 | 2016-03-23 | 青岛歌尔声学科技有限公司 | Open earphone |
| CN106303790A (en) * | 2016-10-31 | 2017-01-04 | 维沃移动通信有限公司 | A kind of earphone |
| CN206596185U (en) * | 2017-04-13 | 2017-10-27 | 广东得胜电子有限公司 | A kind of headphone acoustic cavity body structure |
-
2017
- 2017-04-13 CN CN201710239383.1A patent/CN106878854B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103686568A (en) * | 2013-12-23 | 2014-03-26 | 山东共达电声股份有限公司 | Directional MEMS (Micro Electro Mechanical Systems) microphone and sound receiving device |
| CN204316705U (en) * | 2014-12-01 | 2015-05-06 | 加一联创电子科技有限公司 | Earphone |
| CN104581483A (en) * | 2014-12-24 | 2015-04-29 | 青岛歌尔声学科技有限公司 | Open type earphone |
| CN105430550A (en) * | 2015-12-29 | 2016-03-23 | 青岛歌尔声学科技有限公司 | Open earphone |
| CN106303790A (en) * | 2016-10-31 | 2017-01-04 | 维沃移动通信有限公司 | A kind of earphone |
| CN206596185U (en) * | 2017-04-13 | 2017-10-27 | 广东得胜电子有限公司 | A kind of headphone acoustic cavity body structure |
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| Publication number | Publication date |
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| CN106878854A (en) | 2017-06-20 |
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